How to Handle XMLHttpRequest. Status 12030 Error (ERROR_INTERNET_CONNECTION_ABORTED)

Hello Experts, During Creation of Optionset I debugged the JavaScript code and got the XMLHttpRequest.status code12030. It means ERROR_INTERNET_CONNECTION_ABORTED. What is the reason and how to resolve this issue. I am using SDK.OPTIONSETVALUE.InsertOptionValueRequest() and SDK.MetaData.js for Retrieving Entity and Attribute

---

Thank you 

saroj